EE●Pro
Software for HP 49
EE●Pro is a software ultra-fast and easy to use for the HP 49, and an invaluable aid in solving a variety of practical
problems encountered by both students and professionals in electrical engineering. Designed for speed, accuracy,
and ease of use, this software gives the user the ability to find quick solutions to sets of complex problems. It is
akin to carrying a full set of “solutions in your pocket”.
Main Features
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Over 1000 advanced EE analysis routines, equations, reference tables contained in this software.
Has all the functionality of the HP 16C calculator including 50 functions en binary arithmetic, register
operations, and minimization (Karnaugh Map) in a sum of products form.
A powerful user interface engine allows algebraic entry in many analytical topics. Gives results
symbolically.
Easy-to-use, menu-based interface.
Context-sensitive help text for every screen.
Integrated access to the HP 49 stack for calculations.
Comprehensive documentation for quick reference.
The user interface browser presents three broad categories to the user: Analysis,
Equations and Reference. The Analysis browser presents 13 topics, the Equation
browser presents 16 categories and the Reference browser presents 9 categories.
Equation sets in a given sub-topic can be solved as a whole, or as a selected set of
equations. The variables in the equation set have descriptions in addition to names,
and often an equation set will have a picture associated with it. The help line is
dynamic in content and changes as you proceed in solving the selected problem.
A specific equation can be selected to plot, and multiple plot functions can be used
to do graphical analysis when one of the variables has been changed incrementally.
(The multi-plot screen display example is shown here.).
EE●Pro is a comprehensive software which covers the undergraduate curriculum
for electrical engineers in most universities.
Analysis
The analysis routines in the EE●Pro are indispensable tools for performing quick calculations. Analysis screens
display a list of fields for entering and displaying data. The main part input screen contains input fields for data
entry comparisons and result for displaying computed results. The help text at the bottom of the screen describes
the action required for the highlighted field or type of result displayed. Unit management is not allowed in this
section.
• AC Circuits – Impedance calculations, voltage and current dividers, circuit performance, Wye↔∆
conversion.
• Polyphase Circuits – Wye↔∆ conversion, balanced Wye load, balanced ∆ load.
• Ladder Network
• Filter Design – Chebyshev, Butterworth, and active filters.
• Gain and Frequency – Transfer function, Bode Plots.
• Fourier Transforms – FFT and inverse FFT.
• Two-port Networks – Parameter conversion for z, y, h, g, a, and b parameters, circuit performance, and
interconnected two-ports.
• Transformer performance – Open and short circuits tests and chain parameters.
• Transmission fields Lines – Line characteristics, line parameters, fault location estimate, and stub
impedance matching.
• Computer Engineering – Binary modes screen, binary arithmetic, register operations, bit operations,
binary conversions and Karnaugh Map.
• Algebraic Functions – Partial fraction expansion, piecewise linear functions, polynomial coefficients,
polynomial equations, polynomial roots, symbolic simplification, and Taylor polynomials.
• Error Functions – Using error and complementary error functions.
• Capital Budgeting – Payback period, internal rate of return, net present value, and profitability index.
Equations
The equations section is divided into 16 categories of topics with a large number of sub-topics under each topic.
The equation user interface features a selecting screen, a solving screen and a plotting screen. Equations can be
accessed from any of these screens, with context-sensitive help text provided at each screen. Topics covered by
EE●Pro are:
• Resistive Circuits – Resistance & conductance. Ohm's law & power, temperature effect, maximum power
transfer, and V & I source equivalent.
• Capacitance & Electric Fields – Point charge, long charged line, charged disk, parallel plates & wires,
coaxial cable, and sphere.
• Inductance & Magnetism – Long line, long strip, parallel wires, loop, coaxial cable, and skin effect.
• Electron Motion – Electron beam deflection, thermionic emission, and photoemission.
• Meters & Bridge Circuits – Amp, volt, & ohmmeter, Wheatstone bridge, Wien bridge, Maxwell bridge,
Owen bridge, and symmetrical and unsymmetrical attenuators.
• RL & RC Circuits – RL & RC natural & step responses, and RL and RC series to parallel conversion.
• RLC Circuits – Series impedance, parallel admittance, RLC natural response, underdamped transient,
critically-damped transient and overdamped transient.
• AC Circuits – RL & RC series impedance, impedance↔admittance, two impedances in series, and two
impedances in parallel.
• Polyphase Circuits – Balanced ∆ network, Balanced Wye network, and power measurements.
• Electrical Resonance – Parallel resonance I & II, resonance in lossy inductor, and series resonance.
• OpAmp Circuits – Basic inverter, non-inverting amplifier, current amplifier, transconductance amplifier,
level detector (inverting and non-inverting), differentiator, and differential amplifier.
• Solid State Devices – Semiconductor basics, PN junctions and currents, transistor currents, Ebers-Moll
equations, ideal currents, switching transients, MOS transistors I and II, MOS inverter with different types
of loads, CMOS transistor pair, and junction FET.
• Linear Amplifiers – BJT (Common base, emitter and collector), FET (common source, gate and drain).
Darlington configuration, emitter-coupled amplifiers, differential amplifiers, and source-coupled JFET
pairs.
• Class A, B and C Amplifiers – Class A, B, C amplifiers, power transistors, and push-pull principle.
• Transformers – Ideal transformers and linear equivalent circuits.
• Motors & Generators – Energy conversion, DC generator, separately-excited DC generator, DC shunt and
series generator, separately-excited DC motor, DC shunt and series motor, permanent magnet motor,
induction Motor I & II, and synchronous machines.
Reference
The Reference section provides information for solving certain classes of problems, including looking up
semiconductor properties, decoding the resistor color code, and accessing Laplace, Fourier and Z-transform tables.
• Resistor color chart – 3, 4, or 5 band conversions.
• Standard Component Values – Resistor, capacitor, or inductor value calculations for a given tolerance
level.
• Semiconductor properties – Silicon, some III-V and II-VI compounds.
• Boolean Expressions & Algebra Properties – The 16 commonly used Boolean expressions with
diagrams.
• Transforms – Laplace, Fourier, and Z Transforms and their inverses.
• Constants – 43 constants commonly used by electrical engineers.
• SI Prefixes and Greek alphabet
Technical information is subject to change without notice
© 2005 Gustavo Portales
www.gaak.org